Ventilation of the motor compartment in streamlined automobiles



March 19, 194-0. vr 2,194,398

VENTILATION OF THE MOTdR COMPARTMENT IN STREAMLINED AUTOMOBILES Filed Feb. 28, 1939 Patented Mar. 19, 1940 UNlTED STATES VENTILATION on THE Moron COMPART- MENT IN STREAMLINED AUTOMOBILES Milos Klavik, Prague-Smichov, Czechoslovakia Application February 28, 1939, Serial No. 259,047 In Czechoslovakia Januaryl}, 1938 1 Claim.

In automobiles with stream-lined bodies, the ventilation of the motor compartment is effected through apertures provided in the bottom surface of the body as the visible external surfaces 5 of the body should have the smoothest possible form. As, however, no vacuum is produced under said bottom surface while the automobile is travelling, the airhas to be forced out of these apertures at the expense of motor power.

This disadvantage is eliminated according to the invention by constructing the bottom surface of the body not as a continuous surface parallel to the road surface but as two parallel surfaces which are separated from one another by a step- 15 shaped portion, into which the ventilation apertures of the motor. compartment open. While the automobile is travelling, a vacuum is produced behind the step,,thereby substantially assisting the fiow of air through the motor compartment 20 and the escape of the heated air outwardly from the motor compartment.

The figure shows the arrangement of the ventilation in an automobile with rear engine.

assisted by the vacuum produced behind the said 10 step while the automobile is travelling.

I claim:

In an automobile having a bottom portion substantially parallel with the road and a motor compartment at the rear, means for ventilating the motor compartmentcomprising a partly raised 1 bottom for the motor compartment, a' step-like portion joining the bottom portions of the motor compartment and means for allowing heated air in the step-like portion. v

MILOS KLAVIK to escape from the motor compartment, provided 20 

